Streaming from the Equator of a Drop in an External Electric Field

Quentin Brosseau, Petia M. Vlahovska

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Tip streaming generates micron- and submicron-sized droplets when a thin thread pulled from the pointy end of a drop disintegrates. Here, we report streaming from the equator of a drop placed in a uniform electric field. The instability generates concentric fluid rings encircling the drop, which break up to form an array of microdroplets in the equatorial plane. We show that the streaming results from an interfacial instability at the stagnation line of the electrohydrodynamic flow, which creates a sharp edge. The flow draws from the equator a thin sheet which destabilizes and sheds fluid cylinders. This streaming phenomenon provides a new route for generating monodisperse microemulsions.

Original languageEnglish (US)
Article number034501
JournalPhysical review letters
Volume119
Issue number3
DOIs
StatePublished - Jul 20 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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